3. the act of witnessing something amazing and not believing your eyes.

1. Whilst taking a hit of acid Bob and Sue decided to have intercourse which resulted in an hallucinajaculation.

2. Little Timmy didn't understand why each morning when he woke, his underoos were sticky and wet. He finally told his father who replied "Why Timmy I do believe you are having an hallucinajaculation"!

3. While sipping her morning coffee, Marg looks to the skies to discover a disc shaped object headed in her direction. She thinks to herself "Man, I must be having a hallucinajaculation"!